European countries with Slavic as an official language (from Wikimedia)

Our memorandum says, that the Slavic languages are a relatively coherent language group. Knowledge
of one Slavic language is often sufficient to get at least a rough
understanding of what a text in any other Slavic language is about.
During the course of history, this fact has inspired linguists and
others to build a universal Slavic language that would be understandable
for all Slavs, including the famous Old Church Slavonic language from
the 9th century developed by two Byzantine Greek missionaries and brothers Konstantinos (Cyril) and Methodios from Salonica, the co-patrons saints of the Europe, as well as dozens of other projects from the 16th
century onwards. What they have in common is that they are all based on
the assumption that the Slavic languages are similar enough to make such
an auxiliary language possible at all.

Neoslavonic language design is based on the harmony of following three principles:

To share grammar and common vocabulary with modern spoken Slavic languages in order to build a universal language that Slavic people can
understand without any prior learning.

To be an easy-learned language for those who want to use this language actively. Non-Slavic people can use this language as the door to the big Slavic world. We believe, that knowledge of NS enables both Slavic and non-Slavic people greater passive (e.g. receptive) understanding and better learning of the living Slavic languages.

Neoslavonic continues the
tradition of the Old Church Slavonic language (OCS). OCS was the first
literary Slavic language, believed to have been artificially developed in the 9th century by
two Byzantine Greek missionaries Saints Kyrillos and Methodios, who were
credited with standardizing the Slavic dialects and were using it for
translating the Bible and other ecclesiastical texts as the tool of the
Christianisation of the Slavic people. OCS is still frequently used by the Orthodox Church and sometimes also by the Roman-Catholics in many Slavic countries up to the present days. NS is designed as the modernized and simplified but still sufficiently compatible version of this language.

Interslaviclanguageis notonly one of its kind.In the last twocenturies, there was proposed a lot of verysimilar constructed languages​​. The greatestprogress in this matter we re-use has been made​​in the 19thby the Slovenian priest and linguist Matija Majar Ziljski and the Czech translator and writer Václav František Bambas. Moreover, the successful projectsof reconstructionof the modernSerbian, Czech, Slovak, Indonesian, Arabic and Hebrew language have inspired our project as well.

Why do we need an artificial Slavic language?

We know that one half (maybe yet more) of the total number ofSlav-speakingpeoplehasRussianlanguage. If theRussianlanguage would be sufficientlysimple andunderstandableto otherSlavswithoutlearning,our projectwould beunnecessary. Unfortunatelyit is not.Russian isfar from the imaginarylinguisticcenter ofSlaviclanguages.It has aspecificalphabet,phonetics, grammarandvocabulary without the universal Slavic validity. The very similar situation we have in all modern Slavic languages, above allin other candidatesfortheuniversal Slavic language (e.g. Polish).

Indo-European language tree (from Nature 449, 665-667, Oct. 2007)

Our
strategy is to develop and broadcast this auxiliary language in such way that it can
be naturally incorporated into the collection of spoken Slavic
languages as an auxiliary tool enabling international dialogue, knowledge and cultural
transfer without the need of translating information into several
national languages.

Our experience is that speakers of Slavic
languages tend to perceive Neoslavonic (Interslavic) as either an ancient or remote
dialect of their own native
language, or a neighboring language closely related to their own.
People are often surprised how much they can understand of it.